Array2d class

Class to create 2 dimensions Array.

Constructors:

Array2d(List<double> list) // default constructor

Array2d.empty() // empty array

Array2d.fromArray(Array list) // from another array

Array2d.fixed(int length) // from a fixed length

References

  1. "Jama". https://math.nist.gov/javanumerics/jama/. Retrieved 2019-07-17.
  2. "numpylinalg.solve". https://docs.scipy.org/doc/numpy/reference/generated/numpy.linalg.solve.html. Retrieved 2019-07-19.

Examples

import 'package:scidart/src/numdart/numdart.dart';

var matrix = Array2d.empty();
var line = [1.0 ,2.0 , 3.0];

matrix.add(line);
matrix.add(line);
matrix.add(line);

print(matrix);

/* output:
Array2d([Array([1.0, 2.0, 3.0]), Array([1.0, 2.0, 3.0]), Array([1.0, 2.0, 3.0])])
*/
Inheritance
Available Extensions

Constructors

Array2d(List<Array> list)
Array2d.empty()
Array2d.fixed(int row, int column, {double? initialValue})
Array2d.fromArray(Array2d list)
Array2d.fromVector(Array vals, int mRow)
Construct a matrix from a one-dimensional packed array

Properties

column int
no setter
first Array
The first element.
getter/setter pairinherited
hashCode int
The hash code for this object.
no setterinherited
isEmpty bool
Whether this collection has no elements.
no setterinherited
isNotEmpty bool
Whether this collection has at least one element.
no setterinherited
iterator Iterator<Array>
A new Iterator that allows iterating the elements of this Iterable.
no setterinherited
l List<Array?>
getter/setter pair
last Array
The last element.
getter/setter pairinherited
length int
Return the length of Array2d
getter/setter pairoverride
reversed Iterable<Array>
An Iterable of the objects in this list in reverse order.
no setterinherited
row int
no setter
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
single Array
Checks that this iterable has only one element, and returns that element.
no setterinherited

Methods

add(Array element) → void
Adds value to the end of this list, extending the length by one.
inherited
addAll(Iterable<Array> iterable) → void
Appends all objects of iterable to the end of this list.
inherited
any(bool test(Array element)) bool
Checks whether any element of this iterable satisfies test.
inherited
asMap() Map<int, Array>
An unmodifiable Map view of this list.
inherited
cast<R>() List<R>
Returns a view of this list as a list of R instances.
inherited
clear() → void
Removes all objects from this list; the length of the list becomes zero.
inherited
contains(Object? element) bool
Whether the collection contains an element equal to element.
inherited
copy() Array2d
Generate a copy of the current matrix
elementAt(int index) Array
Returns the indexth element.
inherited
every(bool test(Array element)) bool
Checks whether every element of this iterable satisfies test.
inherited
expand<T>(Iterable<T> f(Array element)) Iterable<T>
Expands each element of this Iterable into zero or more elements.
inherited
fillRange(int start, int end, [Array? fill]) → void
Overwrites a range of elements with fillValue.
inherited
firstWhere(bool test(Array element), {Array orElse()?}) Array
The first element that satisfies the given predicate test.
inherited
fold<T>(T initialValue, T combine(T previousValue, Array element)) → T
Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
inherited
followedBy(Iterable<Array> other) Iterable<Array>
Creates the lazy concatenation of this iterable and other.
inherited
forEach(void action(Array element)) → void
Invokes action on each element of this iterable in iteration order.
inherited
getColumn(int column) Array?
Return Array with the column elements
getRange(int start, int end) Iterable<Array>
Creates an Iterable that iterates over a range of elements.
inherited
indexOf(Object? element, [int start = 0]) int
The first index of element in this list.
inherited
indexWhere(bool test(Array element), [int start = 0]) int
The first index in the list that satisfies the provided test.
inherited
insert(int index, Array element) → void
Inserts element at position index in this list.
inherited
insertAll(int index, Iterable<Array> iterable) → void
Inserts all objects of iterable at position index in this list.
inherited
isMatrix({dynamic throwIfIsNot = true}) bool
join([String separator = ""]) String
Converts each element to a String and concatenates the strings.
inherited
lastIndexOf(Object? element, [int? start]) int
The last index of element in this list.
inherited
lastIndexWhere(bool test(Array element), [int? start]) int
The last index in the list that satisfies the provided test.
inherited
lastWhere(bool test(Array element), {Array orElse()?}) Array
The last element that satisfies the given predicate test.
inherited
map<T>(T f(Array element)) Iterable<T>
The current elements of this iterable modified by toElement.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
reduce(Array combine(Array previousValue, Array element)) Array
Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.
inherited
remove(Object? element) bool
Removes the first occurrence of value from this list.
inherited
removeAt(int index) Array
Removes the object at position index from this list.
inherited
removeLast() Array
Removes and returns the last object in this list.
inherited
removeRange(int start, int end) → void
Removes a range of elements from the list.
inherited
removeWhere(bool test(Array element)) → void
Removes all objects from this list that satisfy test.
inherited
replaceRange(int start, int end, Iterable<Array> newContents) → void
Replaces a range of elements with the elements of replacements.
inherited
retainWhere(bool test(Array element)) → void
Removes all objects from this list that fail to satisfy test.
inherited
setAll(int index, Iterable<Array> iterable) → void
Overwrites elements with the objects of iterable.
inherited
setRange(int start, int end, Iterable<Array> iterable, [int skipCount = 0]) → void
Writes some elements of iterable into a range of this list.
inherited
shuffle([Random? random]) → void
Shuffles the elements of this list randomly.
inherited
singleWhere(bool test(Array element), {Array orElse()?}) Array
The single element that satisfies test.
inherited
skip(int count) Iterable<Array>
Creates an Iterable that provides all but the first count elements.
inherited
skipWhile(bool test(Array element)) Iterable<Array>
Creates an Iterable that skips leading elements while test is satisfied.
inherited
sort([int compare(Array a, Array b)?]) → void
Sorts this list according to the order specified by the compare function.
inherited
subArray2d(int rowStart, int rowEnd, int colStart, int colEnd) Array2d
Return a Sub Array2d with the rage of rows columns elements specified
sublist(int start, [int? end]) List<Array>
Returns a new list containing the elements between start and end.
inherited
take(int count) Iterable<Array>
Creates a lazy iterable of the count first elements of this iterable.
inherited
takeWhile(bool test(Array element)) Iterable<Array>
Creates a lazy iterable of the leading elements satisfying test.
inherited
toList({bool growable = true}) List<Array>
Creates a List containing the elements of this Iterable.
inherited
toSet() Set<Array>
Creates a Set containing the same elements as this iterable.
inherited
toString() String
Convert an Array2d object to a String representation
override
where(bool test(Array element)) Iterable<Array>
Creates a new lazy Iterable with all elements that satisfy the predicate test.
inherited
whereType<T>() Iterable<T>
Creates a new lazy Iterable with all elements that have type T.
inherited

Operators

operator *(Array2d b) Array2d
Multiply two arrays with the same size
operator +(List<Array> b) List<Array>
Add two arrays with the same size
override
operator -(Array2d b) Array2d
Subtract two arrays with the same size
operator /(Array2d b) Array2d
Divide two arrays with the same size
operator ==(Object b) bool
compare two arrays
override
operator [](int index) Array
The object at the given index in the list.
override
operator []=(int index, Array value) → void
Sets the value at the given index in the list to value.
override